Robust Channel Estimation Scheme for Multi-UAV MmWave MIMO Communication with Jittering

In unmanned aerial vehicle (UAV)-assisted millimeter-wave (mmWave) communications, the communication performance is significantly degraded by UAV jitter. We formulate a UAV-assisted mmWave channel model with hybrid beamforming for the impacts of UAV jitter. Then, we derive the distribution of angle...

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Bibliographic Details
Published in:Electronics (Basel) 2023-05, Vol.12 (9), p.2102
Main Authors: Lu, Conghui, Chen, Peng
Format: Article
Language:English
Subjects:
Accuracy
Algorithms
Antennas
Beamforming
Communications networks
Communications systems
Dictionaries
Drone aircraft
Energy consumption
Iterative methods
Mathematical optimization
Millimeter wave communication systems
Millimeter waves
MIMO communication
MIMO communications
Performance degradation
Robustness (mathematics)
Sparsity
Unmanned aerial vehicles
Vibration
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Summary:In unmanned aerial vehicle (UAV)-assisted millimeter-wave (mmWave) communications, the communication performance is significantly degraded by UAV jitter. We formulate a UAV-assisted mmWave channel model with hybrid beamforming for the impacts of UAV jitter. Then, we derive the distribution of angle of arrivals/departures (AOAs/AODs) with random fluctuation of the UAV attitude angle. We develop an iterative reweight-based robust scheme as the super-resolution AOAs/AODs estimation method. Specifically, we introduce the partially adaptive momentum (Padam) estimation method to optimize the objective function of the jittering UAV mmWave massive multi-input multioutput (MIMO) system. Finally, compared with existing channel estimation schemes, the proposed UAV mmWave channel estimation method can achieve robust super-resolution performance in AOAs/AODs and path gains estimation with numerical results. Therefore, the proposed channel estimation scheme is very suitable for UAV mmWave massive MIMO communications with jittering.
ISSN:2079-9292
2079-9292
DOI:10.3390/electronics12092102